While it's cool that specific @mentions will highlight the text in yellow, it can sometimes be a hassle to scroll all the way up through a ton of text to find exactly who's in desperate need of your attention.
No sleep for the weary.. or the support team.
Enter the recent mentions tab. by clicking the '@' logo at the top-right hand corner of the client, you can view the past 7 days of mentions that included you, with some customization options.
Options, oh yes:
The two selections in the top-left of the mentions window: All Servers and This Server let you filter what server mentions show up in the window. The "This Server" option changes based on the server you have open at the time, whereas All Servers display your mentions from, well, all of your servers.
The drop down menu on the right lets you pick & choose what type of mentions you want to include, between direct, role, and everyone mentions. Excluding both the role and everyone options will allow only direct mentions using your username to show up in the mentions window.
There are two ways to quick-jump to the mention, for quick reference:
1. Clicking anywhere in the mention window will quick-jump straight to that server, text channel, and straight to the mention. (or you can hover over the 'jump' icon and watch it light up, but that'll get you to the same place)
2. If you just want to jump to the text channel and Server, but not straight to the mention, you can click the text channel name above the mention bubble, and you'll see the latest message there.